“I used all of my vacation time and days off to do this,” Malinowski says. “My family time suffered. I’m a little worn out by it.”

Invited to Chicago by Supt. Eddie Johnson to lend his expertise after the city suffered one of its bloodiest years in decades in 2016, Malinowski was hired under a $1.1 million contract between the city and University of Chicago. The university’s job: to help build and operate Strategic Decision Support Centers, where cops and civilian analysts monitor gunshot detectors, surveillance cameras and other data to pinpoint where crimes occur and where they might happen next.